CVE-2021-47368

HIGH

Published 2024-05-21T15:03:34.494Z

Actions:

CVSS Score

V3.1

8.1

/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Base Score Metrics

Exploitability: N/A Impact: N/A

EPSS Score

v2023.03.01

0.000

probability

of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-01-25

Exploit Probability

Percentile: 0.178

Higher than 17.8% of all CVEs

Attack Vector Metrics

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Impact Metrics

Confidentiality

HIGH

Integrity

NONE

Availability

HIGH

Description

In the Linux kernel, the following vulnerability has been resolved:

enetc: Fix illegal access when reading affinity_hint

irq_set_affinity_hit() stores a reference to the cpumask_t
parameter in the irq descriptor, and that reference can be
accessed later from irq_affinity_hint_proc_show(). Since
the cpu_mask parameter passed to irq_set_affinity_hit() has
only temporary storage (it's on the stack memory), later
accesses to it are illegal. Thus reads from the corresponding
procfs affinity_hint file can result in paging request oops.

The issue is fixed by the get_cpu_mask() helper, which provides
a permanent storage for the cpumask_t parameter.